Brenner Tumor

**Semantic type:** Neoplastic Process

**Definition:** A tumor composed of solid and cystic nests of neoplastic urothelial-type cells in an abundant stromal component that is dense and fibroblastic in nature. It arises from the ovary and very rarely the paratesticular structures. It includes benign Brenner tumor, borderline Brenner tumor, and malignant Brenner tumor.

**Synonyms:** - Brenner tumor, NOS